AboutAn open source physics at Singapore simulation based on codes written by Félix Jesús Garcia Clemente. more resources can be found herehttp://iwant2study.org/ospsg/index.php/interactive-resources/physics IntroductionprototypeInteresting FactThis data logger record intensity of brightness of white light of real time data.AcknowledgementMy sincere gratitude for the tireless contributions of Francisco Esquembre, Fu-Kwun Hwang, Wolfgang Christian, Félix Jesús Garcia Clemente, Anne Cox, Andrew Duffy, Todd Timberlake and many more in the Open Source Physics community. I have designed much of the above based on their ideas and insights.This research is supported by the eduLab project AEP 01/18 LTK Promoting joy of learning by turning phone into 3 scientific equipment, awarded by the Ministry of Education (MOE), Singapore and managed by National Institute of Education (NIE), Singapore.reference:http://iwant2study.org/ospsg/index.php/projects/576-aep-01-18-ltk-promoting-joy-of-learning-by-turning-phone-into-3-scientific-equipment